Content stub — prose, diagrams, and Lean 4 exercises to be written.
This week covers: Lean 4 definitions for Σ. Proof of critDim_monotone for n=5 case. Connection to Wigner Crystal geometry.
Primary chapter references from book/: chSigma-pentanacci.html
-- dm³ 103 · Week 04 · Lean 4 Lab -- Operator: Σ (≈ 1.966 Pentanacci) -- TODO: fill in theorems and exercises -- stub example : True := trivial